Stencil painted tube tank top from the 70s in very good vintage condition. One strap is a half inch longer than the other. Unsure of sizing but perhaps works best as a size 6 depending on desired length. It seems like a 5/6 as a regular fit or 6/7 if you want a more cropped fit.
Measurents are
14.5 shoulder to hem
10 inches pit to pit